diff --git a/.changeset/12135-protocol-correct-fence-data.md b/.changeset/12135-protocol-correct-fence-data.md
new file mode 100644
index 0000000000..a9002ad027
--- /dev/null
+++ b/.changeset/12135-protocol-correct-fence-data.md
@@ -0,0 +1,4 @@
+---
+---
+
+No package released: one teaching fence in the published `skills/objectui` bundle, which ships through `npx skills add` and sits in no package's `files[]`. The "CORRECT" `data-table` example under "Rule: No Schema Property Invention" in `skills/objectui/rules/protocol.md` gains the inline `data` array `DataTableSchema` declares as required, so the node the skill tells an agent to copy is one both authoring faces accept instead of one `objectui validate` refuses with `data: Invalid input: expected array, received undefined` (objectui#12135).
diff --git a/skills/objectui/rules/protocol.md b/skills/objectui/rules/protocol.md
index d314286a83..ffd2a86080 100644
--- a/skills/objectui/rules/protocol.md
+++ b/skills/objectui/rules/protocol.md
@@ -184,7 +184,8 @@ key under `props` never reaches a `ui:*` / `page:*` renderer at all.
 ```jsonc
 {
   "type": "data-table",
-  "columns": [{ "header": "Name", "accessorKey": "name" }]  // ✅ declared by DataTableSchema, read off the node
+  "columns": [{ "header": "Name", "accessorKey": "name" }],  // ✅ declared by DataTableSchema, read off the node
+  "data": [{ "name": "Ada Lovelace" }]  // ✅ required by DataTableSchema: the rows live inline on the node
 }
 ```